18 lines
491 B
Rust
18 lines
491 B
Rust
// Check that pure functions cannot modify aliased state.
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pure fn modify_in_ref(&&sum: {mut f: int}) {
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sum.f = 3; //! ERROR assigning to mutable field prohibited in pure context
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}
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pure fn modify_in_box(sum: @mut {f: int}) {
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sum.f = 3; //! ERROR assigning to mutable field prohibited in pure context
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}
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impl foo for int {
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pure fn modify_in_box_rec(sum: @{mut f: int}) {
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sum.f = self; //! ERROR assigning to mutable field prohibited in pure context
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}
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}
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fn main() {
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} |